Household device with a door hinge
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Solution Overview
Problem
Conventional household appliance door hinges require additional components and increased assembly effort due to separate manufacturing of the window ring and door hinge, leading to higher assembly costs and reduced stability.
Innovation Solution
The door hinge is attached to the window ring by inserting first and second insertion elements into corresponding receiving elements, eliminating the need for additional fasteners and ensuring a stable connection through recesses or sockets, with centering pins for precise alignment and a clamping connection for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the window ring and door hinge are manufactured as separate components and connected by screw or plug connection, then the assembly process becomes more complex and requires additional fasteners, but the manufacturing flexibility is improved
Solution Approach 1:
The patent integrates the door hinge directly into the window ring structure, eliminating the need for separate fasteners and reducing assembly complexity. The hinge becomes an inherent part of the window ring component rather than an attached accessory, thereby merging two previously separate components into one unified structure.
Solution Approach 2:
The patent removes the intermediate fastening elements (screws, plugs, or clips) from the assembly process. By extracting these additional components and replacing them with a direct integration method, the design simplifies the overall structure and reduces the number of parts required for assembly.
2Reliability
If additional fasteners and components are used to attach the door hinge to the window ring, then the connection stability may be improved, but the assembly effort and installation costs increase
Solution Approach 1:
By merging the door hinge and window ring into a single integrated component, the patent eliminates the need for separate fastening operations. This reduces assembly time and effort while maintaining connection stability through the unified structure that eliminates potential failure points associated with multiple fasteners.
Solution Approach 2:
The integrated design allows the window ring structure itself to provide the hinge function without requiring external fastening mechanisms. The structure serves multiple functions simultaneously, reducing the need for additional components and simplifying the assembly process.
3Strength
If the door hinge is attached using conventional fastening methods, then the attachment process becomes more complex, but the structural integrity can be maintained
Solution Approach 1:
The patent combines the door hinge and window ring into one integrated component, reducing the total number of parts while maintaining structural integrity. The unified structure eliminates potential weak points at fastener locations and creates a more robust overall design.
Solution Approach 2:
The patent removes intermediate fastening components from the assembly, reducing the number of parts that need to be manufactured, inventoried, and assembled. This extraction of unnecessary components simplifies the overall system while the integrated design maintains or improves structural strength.
Data Source
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AI summary
The present invention relates to a household appliance (100) with a base body (103), the base body (103) having a base body opening (105), and an appliance door (107) for closing the base body opening (105), the appliance door (107) having a Window ring (109) made of plastic for holding a window (111) and a door hinge (113) for holding the appliance door (107) on the base body (103). The window ring (109) has a first receiving element (123) and a second receiving element (125) for receiving the door hinge (113). The door hinge (113) has a first insertion element (119), which can be inserted into the first receiving element (123), and a second insertion element (131), which can be inserted into the second receiving element (125), in order to rotate the door hinge (113 ) to be attached to the window ring (109).